Shaving mechanism



May 1, 1945. A. BELZ SHAVING MECHANISM Filed April 1, 1944 I n I. 5 ud It a 6 T )3 1 if: I :1?"

Patented May 1, 1945 OFFICE SHAVING MECHANISM August Belz, Goldach,Switzerland Application April 1, 1944, Serial No. 529,126 In SwitzerlandApril 6, 1943 6 Claims.

The object of the invention is a shaving mechanism with upper and lowercutter, in which the oscillating upper cutter, with open teeth, iscurved in longitudinal direction and bears against the similarly curvedstationary cutter.

This presents different advantages, viz: The cutters can be brought intouniform contact with the skin to be shaved. The hairs are well liftedup, thus allowing a quick shaving. Even sharply rounded and hollow partsof the skin can be thoroughly shaved. The upper cutter can bemanufactured from an endless band.

The accompanying drawing illustrates, by way of example, one embodimentof the object of the invention.

Fig. 1 is a longitudinal section through the cutting head of the shavingmechanism;

Fig. 2 is a cross section through the cutting head, and

Fig. 3 is a plan view of the cutting head, with certain parts removed.

The lower cutter l with open teeth on its edges is curved inlongitudinal direction and fixed to the cutting head 3 by means of thescrews 2. Upon this lower cutter I lies a very thin upper cutter 4likewise with open teeth on both edges. This upper cutter is also curvedin longitudinal direction, but has a plane cross section. The ends 5 ofthe spring stirrup 6, serving as a driving means for the upper cutter 4,engage slots l5 of this latter cutter. Since the ends 5 have thetendency to go away from one another, the upper cutter 4 is constantlystretched by the stirrup 8. On compressing this stirrup, the uppercutter can be removed. A spring 1 bearing on the one end against thecutting head 3, and on the other end against the stirrup 6 provides forthe upper cutter 4 being pressed against the lower cutter I. A fork 8,receiving a sleeve Ilia rotatably mounted on the pin I0 fixed to thecasting oi'the shaving mechanism, engages the stirrup 8. The sleeve Iliaalso passes through one end of and the fork 8 and lever H are securedtogether on the sleeve between a flange Illb at one end thereof and anut I00 threaded on the other end. An eccentric I: on a driving shai'tl4 engages in a slot I: in the lever ll. Shaft M is driven by anon-illustrated motor. It the eccentric I3 rotates, lever II and fork Ioscillate. This latter transmits the oscillating movement to the stirrup8 and thus to the upper cutter 4. Since the slots is are long enough sothat the ends I cannot at any moment bear but against the outer edge ofthese slots, the upper cutter is drawn, on a righthand movement. by theright-hand end I. on a a lever H:

left-hand movement, however, by the left-hand end 5. It is thus neverpossible that, for instance, on a left-hand movement, the upper cutteris pushed by the right-hand end 5 or vice versa,

which would result in an unstressing of the cutter 4.

What I claim is:

1. In a shaving mechanism, a lower stationary cutter with open teeth,curved in longitudinal direction, and an upper oscillating cutter withopen teeth, bearing in a corresponding curve against said lowerstationary cutter.

2. In a shaving mechanism according to claim 1, said upper cutter havinga plane cross section.

3. In a shaving mechanism, a lower stationary cutter with open teeth,curved in longitudinal direction, but of plane cross section, an upperoscillating cutter with open teeth, bearing in a corresponding curveagainst said lower stationary cutter, and a spring member in engagementwith said upper cutter for driving the latter, said spring member beingshaped to stretch constantly said upper cutter.

4. In a shaving mechanism, a lower stationary cutter with open teeth,curved in longitudinal direction, but of plane cross section, an upperoscillating cutter with open teeth, a spring destined to press saidupper cutter in a corresponding curve against said lower stationarycutter, and a spring member in engagement with said upper cutter fordriving the latter, said spring member being shaped to stretchconstantly said upper cutter.

5. In a shaving mechanism, a lower stationary cutter with open teeth,curved in longitudinal direction, but of plane cross section, an upperoscillating cutter with open teeth, bearing in a corresponding curveagainst said lower stationary cutter, and a spring member in engagementwith said upper cutter for drawing the latter in both directions ofmovement, said spring member being shaped to stretch constantly saidupper cutter.

6. In a shaving mechanism, a lower stationary cutter with open teeth,curved in longitudinal direction, but of plane cross section, an upperoscillating cutter with open teeth, bearing in a corresponding curveagainst said lower stationary cutter, and a spring member in engagementwith said upper cutter for drawing the latter in both directions ofmovement, said spring member, shaped to stretch constantly said uppercutter, being detachable from said upper cutter on compression 01' saidspring member.

AUGUST BELZ.

